• 한국임상수의학회지
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• 제18권3호
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• pp.211-214
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• 2001

The embolic effect of Gelfoam was investigated for transarterial embolization of renal artery (TAE-RA) in four normal rabbits. The catheter was selectively introduced into the unilateral renal artery under fluoroscopy and the Gelfoam-iohexol mixture was infused through a catheter into the renal arteries of 4 rabbits. The immediate and delayed (8 weeks) embolic effects on the renal arteries was investigated with selective angiography. The Gelfoam-iohexol was visualized under fluorosxopy in four rabbits. Renal arteries were ablated immediately after TAE-RA in four rabbits, however, opacification of renal parenchyma was visualized by injected contrast agent in 3 rabbits at 8 weeks. The Gelfoam-iohexol can be used as a short-term embolic materials for TAE-RA, however it is not adequate for permanent embolization of renal artery.

• Korean Journal of Radiology
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• 제23권8호
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• pp.794-802
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• 2022

Objective: To evaluate the feasibility of single-shot whole thoracic time-resolved MR angiography (TR-MRA) to identify the feeding arteries of pulmonary arteriovenous malformations (PAVMs) and reperfusion of the lesion after embolization in patients with multiple PAVMs. Materials and Methods: Nine patients (8 females and 1 male; age range, 23-65 years) with a total of 62 PAVMs who underwent percutaneous embolization for multiple PAVMs and were subsequently followed up using TR-MRA and CT obtained within 6 months from each other were retrospectively reviewed. All imaging analyses were performed by two independent readers blinded to clinical information. The visibility of the feeding arteries on maximum intensity projection (MIP) reconstruction and multiplanar reconstruction (MPR) TR-MRA images was evaluated by comparing them to CT as a reference. The accuracy of TR-MRA for diagnosing reperfusion of the PAVM after embolization was assessed in a subgroup with angiographic confirmation. The reliability between the readers in interpreting the TR-MRA results was analyzed using kappa (κ) statistics. Results: Feeding arteries were visible on the original MIP images of TR-MRA in 82.3% (51/62) and 85.5% (53/62) of readers 1 and 2, respectively. Using the MPR, the rates increased to 93.5% (58/62) and 95.2% (59/62), respectively (κ = 0.760 and 0.792, respectively). Factors for invisibility were the course of feeding arteries in the anteroposterior plane, proximity to large enhancing vessels, adjacency to the chest wall, pulsation of the heart, and small feeding arteries. Thirty-seven PAVMs in five patients had angiographic confirmation of reperfusion status after embolization (32 occlusions and 5 reperfusions). TR-MRA showed 100% (5/5) sensitivity and 100% (32/32, including three cases in which the feeding arteries were not visible on TR-MRA) specificity for both readers. Conclusion: Single-shot whole thoracic TR-MRA with MPR showed good visibility of the feeding arteries of PAVMs and high accuracy in diagnosing reperfusion after embolization. Single-shot whole thoracic TR-MRA may be a feasible method for the follow-up of patients with multiple PAVMs.

• Journal of Yeungnam Medical Science
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• 제12권1호
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• pp.96-104
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• 1995

여러가지 색전물질이 조직내에서 어떤 변화를 야기시키며 또한 시간경과에 따라 어떤 변화를 보이게 되는지를 알아보기 위해 EVAL, Histoacryl, Ivalon을 이용하여 토끼의 신동맥을 통해 색전을 실시하였으며 시간경과에 따라 조직학적으로 검사하여 다음과 같은 결과를 얻었다. EVAL은 1주일이내의 초기단계에는 혈관 내에서 별다른 조직변화를 일으키지 않았으나 2주일 이내의 중기단계에는 혈관벽의 비후를 나타냈다. Histoacryl은 1주일이내의 초기단계에 벌써 심한 섬유소양 변성을 보여 심한 조직변화를 일으킨다는 것을 알 수 있었고 실험 예의 반수에서 신동맥의 폐쇄에 의한 경색을 볼 수 있어 강한 조직유착성을 시사해 주었으며 실제 환자에 적용함에 있어 주의를 환기시켜 주었고 혈류가 빠르거나 누공등이 있는 경우에 더욱 적절히 사용될 수 있음을 알 수 있었다. Ivalon은 초기에는 혈관염의 소견을, 중기에는 이물질반응에 의한 거대세포를, 후기에는 심한 섬유화의 소견을 보여 주었고 수술을 대신하는 치료적인 목적보다는 혈류를 줄여 수술을 보다 용이하게 해주는 등 수술의 보조적인 이용에 바람직할 것으로 기대된다.

• Tuberculosis and Respiratory Diseases
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• 제75권3호
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• pp.120-124
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• 2013

Herein, we report a case of multiple systemic arteries to pulmonary artery fistulas without any underlying causes, presenting recurrent hemoptysis. Transcatheter embolization was successfully performed several times on multiple systemic feeding arteries. Multiple systemic arteries to pulmonary fistulas can be a source of uncontrolled bleeding, and embolization may be a reasonable therapeutic option to control the bleeding.

• Tuberculosis and Respiratory Diseases
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• 제78권4호
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• pp.408-411
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• 2015

Pulmonary arteriovenous malformations (AVMs) are caused by abnormal vascular communications between the pulmonary arteries and pulmonary veins, which lead to the blood bypassing the normal pulmonary capillary beds. Pulmonary AVMs result in right-to-left shunts, resulting in hypoxemia, cyanosis, and dyspnea. Clinical signs and symptoms vary depending on the size, number, and flow of the AVMs. Transcatheter embolization is the treatment of choice for pulmonary AVMs. However, this method can fail if the AVM is large or has multiple complex feeding arteries. Surgical resection is necessary in those kind of cases. Here, we report the case of a patient with a 6-cm pulmonary AVM with multiple feeding arteries that was successfully treated by repeated coil embolization without surgery.

• Journal of Korean Neurosurgical Society
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• 제41권6호
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• pp.411-413
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• 2007

We report on a diabetic 52-year-old man who complained ocular floating sensation, headache and dizziness, in whom a left parieto-occipital dural ateriovenous fistulas [DAVFs], fed by bilateral superficial temporal arteries and occipital artery, drained into the cortical vein of the left parieto-occipital convexity. Because the patient's chief complaint was ocular symptom for diabetic retinopathy, we initially didn't consider an DAVFs until brain magnetic resonance imaging [MRI] was done. Diffusion-weighted brain MRI revealed acute cerebral infarction and microhemorrhage in the lesion. Transarterial embolization with mixture of glue and lipiodol obliterated the DAVFs completely. Although the DAVFs fed by multi-arteries, the fistulous portion has been disappeared after embolization via an only left occipital artery Endovascular embolization of the fistula led to symptomatic improvement, except ocular discomfort.

• Journal of Korean Neurosurgical Society
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• 제57권1호
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• pp.54-57
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• 2015

A 66-year-old woman presented with intermittent paraparesis and generalized tonic-clonic seizure. Cerebral angiography demonstrated dural arteriovenous fistula (AVF) involving superior sagittal sinus (SSS), which was associated with SSS occlusion on the posterior one third. The dural AVF was fed by bilateral middle meningeal arteries (MMAs), superficial temporal arteries (STAs) and occipital arteries with marked retrograde cortical venous reflux. Transfemoral arterial Onyx embolization was performed through right MMA and STA, but it was not successful, which resulted in partial obliteration of dural AVF because of tortuous MMA preventing the microcatheter from reaching the fistula closely enough. Second procedure was performed through left MMA accessed by direct MMA puncture following small decortications of cranium overlying the MMA using diamond drill one week later. Microcatheter could be located far distally to the fistula through 5 F sheath placed into the MMA and complete obliteration of dural AVF was achieved using 3.9 cc of Onyx.

• Tuberculosis and Respiratory Diseases
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• 제43권4호
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• pp.590-599
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• 1996

연구배경 : 기관지 동맥색전술은 일시적 혹은 영구적인 지혈효과를 기대할 수 있고, 지혈효과이외에도 수술이 불가능한 환자나 수술이 필요한 환자의 경우에 수술전 환자상태를 호전시키기 위한 목적으로 이응퇴고 있다. 저자들은 대량객혈환자에서 동맥색전술의 효과 및 객혈의 재발율을 알아보고 재발된 환자의 임상적, 방사선학적 특징과 임상경과 및 예후를 조사하여 동맥색전술의 유용성을 평가해보고자 하였다. 그리고 색전술후에 재출혈이 일어나는 원인과 재발을 예측할 수 있는 인자를 알아보고자 하였다. 방법 : 객혈을 주소로 입원한 환자중 1회 100cc이상, 1일 500cc이상의 대량객혈로 동맥색 전술을 시행한 47명의 환자를 대상으로 의무기록과 혈관조영술 사진을 후향적으로 조사하였다. 결과 : 1)대량객혈의 원인질환으로는 폐결핵(35예), 기관지확장증(5예), 국균종(2예), 폐암(2예) 폐동정맥기형(1예)와 원인미상(2예)이 있었다. 2) 기관지 동맥색전술의 지혈성공율은 94%였으며, 추적관찰중 객혈의 재발은 40%였다. 3) 초기 기관지 동맥조영술 소견상 색전대상이 양측성인 경우, 체측부동맥-폐동맥간단락이 있는 경우, 기관지동맥이외의 체측부동맥이 영양동맥으로 관여한 경우와 과도한 신생혈관형성이 있었던 경우 등 이들 모두에서 재출혈군과 비재출혈군 사이에서 유의한 차이를 보이지 않았다. 4) 재색전술을 시행한 경우는 18예(13명)였다. 이들 중 14예(78%)에서 혈관의 재개통이 있었으며, 8예(44%)에서 초기에 색전하지 못하였던 혈관들의 과증식으로 인한 새로운 영양동맥의 형성에 의한 재출혈이 있었다. 5) 동맥색전술의 합병증은 발열, 흉통, 기침, 배뇨장애 등 경미한 합병증이 대부분(27예,87%)이었고, 마비성장폐색, 무기폐, 하반신마비, 비장경색 등 장기합병증이 각각 1예씩으로 13%를 차지하였다. 결론 : 기관지 동맥색전술은 대량객혈시 지혈율이 높고 심각한 합병증의 빈도가 적어 효과적이면서도 비교적 안전하게 시행할 수 있는 치료방법으로 사료된다. 대량객혈시 초기 기관지 동맥조영술 소견으로 색전술후 재발을 예측하기는 어려우며, 재출혈이 있는 경우 대부분의 원인은 이전 색전동맥의 재개통과 새로운 영양동맥의 형성이 관여함을 알 수 있었다.

• Journal of Trauma and Injury
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• 제29권4호
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• pp.161-166
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• 2016

Purpose: Bleeding is the primary cause of death after severe pelvic fracture. Transcatheter arterial embolization (TAE) is the mainstay of treatment for arterial bleeding. This study aimed to determine the frequency of bleeding by angiography of blush-positive pelvic fractures on computed tomography (CT) images. The bleeding arteries that were involved were investigated by pelvic angiography. Methods: This retrospective cohort study evaluated 83 pelvic fracture patients who were treated in the intensive care unit of the author's trauma center between January 01, 2013 and April 30, 2015. Results: Overall mortality was 9 of 83 patients (10.8%). Blush was observed in 37 patients; blush-positive patients had significantly higher mortality (24.3%) than blush-negative patients (0%). Twenty-four of the 83 patients (28.9%) underwent pelvic angiography. Bleeding was showed in 22 of 24 patients in pelvic angiography. TAE was successfully performed in 21 (95.5%) of the bleeding 22 patients. Angiography was performed in 23 of 37 blush-positive patients, and arterial bleeding was identified in 21 (91.3%). A total 33 bleeding arteries were identified in 22 angiography-positive patients. The most frequent origin of bleeding was internal iliac artery (69.7%) followed by the external iliac artery (18.2%) and lumbar arteries (12.1%). Conclusion: The vascular blush observed in CT scans indicates sites of ongoing bleeding in pelvic angiography. TAE is an excellent therapeutic option for arterial bleeding and has a high success rate with few complications.

• Journal of Korean Neurosurgical Society
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• 제44권3호
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• pp.163-165
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• 2008

Kissing aneurysms are the rare type of multiple aneurysms. They are adjacent aneurysms of different origin arteries in the same region, which require great care in diagnosis and treatment. We report a case of kissing aneurysms at the anterior communicating artery (AcomA) which were treated by endovascular coil embolization.